Regulating apparatus.



Patented Dec. 1,1908.

3 SHEETS-BHEI5T 1.

INVENTOR 47% i 124'! ATT R N EYS D H. HAYWOOD. REGULATING APPARATUS.A'PPLIOATION FILED JAN.15. 1001.

Patented D60. 1. 1908 3 SHELTS- -S MEET 2.

"n 7 i T m m 3 M W PM k w J M w 4 m M M. v H,

D. H. HAYWOOD.

REGULATIN G APPARATUS. APPLICATION FILED JAN. 15, L907.

905 425. Patented Dec. 1,1908

3 SHEETs-SHEET 3. f6

y -v w INVENTOR BY p I DANIEL HOWARE) HA'YWGOD, 01 NEW YORK, N.

EEULATING more eons.

Zt'o. 905,4655.

To all whom may concern:

ltie it lnto'wnthet It DAN IEL HOWARD Har- -woon, a citizen of theUnited States 0t 'A-ineriee, and resident of NeW'Yorh, county 5 antiState of New York. have invented eertain new and. useful Improvements inRegulating Apparatus, of which the following is a specification,reference being had to the accompanying drawings, forming a 19 thereof.My invention relates to heat regulating apparatus, and particularly toheat regolatingimeans controlled initially by a thermostat. in theparticular class of apparatus l have reference to,'the thermostatcontrols the operation of a minute air valve, the movement of whicheither directly or lDCll rectly controls th supply and Waste of motivefluid to and from the fluid pressure motor of a main. valve. To attainthe reqnireti'delieacyin the thermostat, the move ment thereof, endhence the movement of? the valve controlled thereby, inust necessarilybe minute, hence but minute quantities of motive tiniclwill bepermitted. to pass-tho seitlvalve when the some is operated for thepurpose of supplying motive fluitl to the hind" pressure motor orothenwiseQ .But where steam is employed for heating por Poses lit-isundesirable that 'theniain controlling valve therefor shall Work slowly;particularly it undesirable thatthe saicl 'niain'heat regulating valveshall open slowly: Que of the main reasons for this is that, byadmitting a: 'erysniall quantity, of steam at. it emcee? i "coldradiator thesteeinis permitted to condense, and continues to conclnseiascontinues to be aclniittech intil finally the radiator, and indeed aportQtion of the heating system, fills up with ovate]: Many attemptshave been made to obviate this, and to compel a quick and gositiveinoveinentof the heat regulating valve tolloiving 'enceeclingly minutemovements of the thermostat. Relay systems are an on ample ofthis inwhich a relay is interposed between the thermostatically controlledvvalve and the niain'valve 'ancl tnotor such; relay consisting of asecondary valve and. secondary motor therefor, the secondary motorcontrolled by movements of the thern'zostatie' valve, the seconclaryvalve operated by the secondary motor, and the main valve niotoroperatetl'uoon movements of the-sec Specification. 0t Illetters. EatentiApplication filed January 15, 1967. Serial No. 352,373.

point.

1 cnlty because the relay itseli' is apt to "merit ends. 3' motor andvalve. Such system, hoigv I are to?" o Patented floor it, 191153,

post for many reasons, an important one 'Wl'lich is that in such casethe lll'Efill'lOL attical-ly eontrollec'l valve, instead of operatingdirectly in connection with the motor the to main valve, operates inconnection with the secondary motor, and the main motor is not operatecluntil aftenthe movement oi the secondary valve. The control. of the refvelv'e 'is hence inflireet insteeel of? (lir ,t, whereby there en 39 Ior t odenoy to inaccuracy, nnrlthe operation or the in. "t. valve isretarded With respect to the time the tl'iern'iostatically co moved tosuch an extent pair the etiiciency ot thee say the teinperaiure n 5above or below e /T dfiifil linneel poi: the main valve is cameo tooperate, the ideal condition is of course, opera 17 5 tion of the mainvalve in one direction or other immediately the tei'nperatnre ri to anyextent above or belon Moreover, the mechanism only partial (lowly, mayin apartially open condition, whereby the some state of things is liableto occur as if there were no relay. that is to say motive ll'llltl maybe atlniittetl or exhausted so slowly as to produce just the etieot itmost desired to will, Still further. the addition of role} niechlSl'l'). tends to complicate strn add moving parts of the Cllili'lfllei?iiltel to get out oiorcler fllltl which it 1 attention to keep themWorking properly.

To meet and overcome these and other dillionlti'es in a system of thiskiml, .l have devised an apparatus in which the theisnostat directlycontrols the inein valve, in that it initially controls n'lo ertient otthe motor thereof, and l have provider} means operated by the motoritself in its moven'lent to cause the rapid completion oi? suchmoveirient in whichever direction it he b l started. By this it obtainall the benefits of the direct control of the main valve fromthe'therxnostet without the intervention of ielay means, but l: coir-poithe quick 1nd 1 positive movement of the inain valve directly it hasstarted eith to. open or elt i I. ,w v. J.

' l liltcllzi valve mechanism, including auxi when the motor m a restposition at either Il iary inlet I nd exhaust valves, both said valvesclosed end of its stroke. but one of the said valves being arranged tobe operated by the motor by the said. motor, when it moves in the otherdlrectlon.

, In order that my invention may be fully nderstood, I Will now ,proceedto describe n OllllmtlllllQlit thereot, having reference to theacconipiniying drawings illustrating ame, and will then point out thenovel features in claims.

In the drawin s' Fi 'ure 1 is a 'eneral Z3 73 t i view of the heat reguating apparatus. lfig.

mechanism. tical fluid prt sure mot or therefor. showing also thesuppleinentail val "e n'iechani:

is a detail view. at r'ght angles thereto of is a detail sectional viewof the thermostatic Fig. is a view in central veron through the mainvalve and .1 operted by the-motor in its movement. l lg. 4t

ertain parts in connection with the supplepon the line l-l of Fig. Fig.1s a v detail. view in central vertical section of the ism. Fig. G is aSlll'llltll' view showing a drawing the main valve therefor. 12 thefluid pressure motor for the main valve. and 13 the ther- 1 mostaticmeans and valve mechanism in conl nection tliertnvith.

which leads 't'rom the thermostat to the'tluid pressure motor 12.

slruction, the form hero'n being the well known Davis & Roe chthermostat described No. 701.115 and dated July 8. 1902. Saidthern'iost'at, which appears on an enlarged 3 scale in the. 2.COHlIJl'ISQS a thermostatic strip ea rri es a with said'mei'i'iber. Thevalves 20 and 21 are rated bv means of a stem 24. the length of which isu t sutilcuant so that when the valve will be onen; pas age winch connecs with the conduit so that the lever lfi'carrving the valve 20 my heunwed outward as far 1S desired l l i mental exhaust valve. the sectionbeingtaken 1 l lain valve motor, with a modified form and (instruct onot supplen'iei'ital valve mechanurther modification.

The heating system is represented in the bv a radiator 10. lldesignating- 14 designates a conduit which constitutes n'iain andconstant. source of supply of fluid nder pre ure. 1.? designating theconduit The thermostat may be of anv desired connd claimed in UnitedStates Letters Patent 3 secured at one end to a ba e 17, and at the therend to a stud 18. which is-mounted pen a pivoted lever lfh'the end ofwhich valve 20. .luother valve 21 is "iounted upon a spring 22 within achamber 9 the main supply conduit .4 connecting rrznged opposite eachother. being sepa 0 is closed tirmlv to its seat. the valve The stem 24is arranged in a 5, and is di posed between the said valves after the.valve 21 has shut down to its seat. A spring 9 tends to pull the lever19 downard, and is of a stiength sntlicient to more tl an overcome thercsilieiu e of the spring 22 and its tendency to close the valve 21 toits seat.

The operation of the thern'iostat is as follows Air under pressure isconstantly supplied to the chamber 23, but will not be allowed to passthe valve 2]. so long as the said valve is closed. The valve 21 will beopened when the temperature I'lSt-n' snliiciently to cause thethermostat c strip 16 to expand, whereby the spring 26 will force thelever 10 downward so as to close the valve 20 and open the valve 21.Then air will flow from the chamber throu gl the conduit Q When thetemperature again tails so that. the

strip it contracts, the 1 0 cause the valve 21 to be closed and thelever 19 will be lifted 'alve 2t) opened. This will open the conduit 1:;to atmosphere while closingit to supply.

: in the atter condition the conduit: will act as a discharge passage todischarge motive fluid from the fluid pressure motor 12, as will now beexplained.

Referring more particularly to l 'igs. 3 and l of the drawings, themotor 12 will be seen i to comprise a fluid pressui e chamber 26.11M-

ing a stationary wall 27, and a movable wall 28 III the form of aflexible diaphragm, such diaphragm supported by an abutu'ient 29.

The saio abutment Ell-is mounted upon the .valve stem 30 of a valve plug3i employed in COll'lbiIltltlUll with the valve seat 32 of the partdesignated as a whole by the reference character 1'1, and previoirslyreferred to as the main valve. The conduit 15 connects with a passage 33which leads to the interior of the chamber 5-36, whereby it will be seenthat. as motive fluid. is admitted through the conduit-l5, said motivelluid will enter the chamber 26 through the passage 33, and will actupon the diaphragm so and abutment 125) to close the valve 3] againstits at. 232. The valve 31 will be held closed to its seat tor so long atime as pressure is maintained in the chamber 26, but upon relief olpressure from the chamber ill as through the pasrtage 2-33 and conduit15 past the exhaust. valve 20 of the thermostat, the said valve '31 willbe moved away from il'-- seat under the influence ol' spring 34, whichspring exerts a coustant tendency to so move the said valve.

The meehanisn'i so tar described comprises means for admitting andexhausting motive fluid to and from the chamber 313 through thethermostat only, but 1' have provided auxiliary valve means foradmitting and exhaustin :notive iluid to and from the said chamber in aninlet valve 35 and an exhaust valve 3t; operated by the motorJQ itself.Thevalve 35 compri es a valve piece 536' titted for orgagemei'it with avalve seat 37 er'introlling admission from a passage 38 in connection:20 spring whieh is crmstrig n said abut through a, pipe 89 with the31min, source of e 'ten inn. m supply 14% A nah a 4:6 .ieeeis iii'em l ea stun a) and n. 1 M 1 ing; 44:- en

si in we iiez ring i I A? my M 1011 .z-L timt 0 the the valve 51 wemeter 3 MG v .ive piece 1" u 1... mm" m i, ts) sem e h "'01? Li. efluid 1) after the val has been 0 03m, 2 play of, in the mm 0 1 ion, butthe "nid waive my, mie ei iieh A? an his mom or less being piece 36" ismanually f efl, to ea i1 by allowed i ore "(he abutment 529 finallyrests 89 means lever 4:6, whieitl engages the aimtupon the exmsme Lpperend 063 iii m 30. mam 3, the seici lever being piveie I moveun-mig.which is. ea far as any 1210 a par file frame (if the m0? pressed my 01.e ,i

ted. ,ze

V81 'e'ut deal mere piece e6" than the allowed to rei urn. 1'10 us; :1111211 positinn unsures 0i ihe T the ii'ailuence 01 the spring &8, This;motive flui k izzkes pince e f 'b'e" "'21. re can sing; the (k wi; 50 bem'hizzli y rem the 51, as 111m defied knee 111 big of d) Eirehd e whichis email 1, D reutiy the arm 1 49 and. hence 1v 1e Q9. t0 eiose t mabmnm :29 1 lie flaiigewl 'ilii upon ii v engage the fe'tent 50 se =1engagement 1e in ii am Jess iiiie valve pie The Valve 81 is new tightlyclosed. am will rennin dosed so long ihere is eufiie' *J'i 'e in ii'zechambe 36. Wii reliwe l iiTS 'i'iuid Jr Jamie, the

I and, fiqive 31 will be ireh,

' iey are shown in i e v s with the influence 0f 7 ,pm'ts spring 34-.ing the iii'lfif. part efjiiis and j essages thereto and em, maylx'iovemeni; the flange will 'ieel'ignge the dereadily be very much athe; of tent 50 of the 11cm 49, b the said detent the thermosieahcfliycentz'e'ileci veivee and will 310W mereiy yiehL :mwing immrdiy in portsand peeeeiges there" 'om se time, a'fteithe arm L 5 iinst t} sure of thesp the mm 12 eenmeneed 20 epemte 1m- 55, way nft'eci" der the influence053 119 thermesiiet, iargge any mevement 01' the mm 4-9 3 fie thequantity Ofmotive fluiti Wili be qu' L; edfiflnge has passed by the deLli 50, the mime-d in the chamber tilfiEQOf is quickly detent will snapfmrwmrd so is m be ready cause the completion of the'opei'ative mevetobe opemtiveiy engaged by the said. flange ment thereofinihe direwfion Inwhich it is when it again mm'es in a dmvnward direestarted. Thus,directly i valve 31.. comtime. In moving rimvmmrd, however, the V memesits dosing; inwel'nerit i. said f Henge 5i will near the completion ofits said ing movement will be quickly and poeiii ely d'ownweyci movement onga another detent completed. The aris are an eo'nstruci'e and 56,-eimiiarly mounted, in an am; 5'3 pivoted 55 arranged that til eivalvepiece W'ii he held. at 58 upon 'iheirnme of the meter, Reid dc open soin supply motive fiiiid ciiremiy tent being hOWOCQS. permitted to yieidfrom the main source of supply untii the upon the engagement of thefia'mi'e 51 there val e 31 is entirely closed, and, in order :0 with onits ciownwerd movement, but adapt compei ahe eemplete elusive; tiweViiik fl 31 to he opeii'efivelj en iged fl'xerehgm 11pm Balk-Jae a: heValve 3i? is again rmitLed. te fine upwm'ci movement f ibe saw The ,125

close, I EJI'OVidQKi e mean 'fm" permit" arm has seem 11 king :1 chi;oyefihrew mm merit 0:5 :he carqri a :me

i meter he waive 951 f m: to it; W3

em'nprlsmg par s carrying the flange 51, the valve 60 will be opened soas to open the passage 61 to the atmosphere, and this opening of thevalve 60 wilitake place before the valve 31 has left its scat, becauseit will be during the taking up of the excess movenrent which waspermitted by the spring 52. The valve 60 in thus opening the auxiliarydischarge 61 to atiiiospliei-eavi l permit fluid under pressure to berapidly exhausted from the chamber 90, so that directly the motor com--incnces LO move upward to open the valve 31, it will be immediatelycompelled to move the whole distance in that direction. Thus, directlythere is any tendency to open the valve 1ll in the slightest degree, thesaid valve will be immediately opened wide, and there will be noopportunity for opening the valve slowly or of holding the valve in anintermediate position. The arm .37 will be released when the partscarrying the flange 51 reach their uppermost position, so as to againclose the exhaust valve 60 when the valve 31 is wide open, the partsthen being in the position shown in Fig. 3, and the motor ready foranother operative downward movement, thesaid flange 51 having not onlyreleased the arm 57, but having passed the detent 50 carried by the armelf) as above explained.

From the foregoing it will be seen. that any rest position of the valve31 other than wide open or entirely closed will be impossible, for, oncethe thermostat has so operated as to start the motor in one direction,the auxiliary valve mechanism will either operate to quickly admit alarge quantity of motive fluid'thcreto to complete the movement rapidlyin one direction, or to quickly exhaustthe motive fluid therel'ron'i tocompel the rapid movement of the motor in the other direction, in ac:ordance with which di rection the thermostatic means first gave initialmovement to the motor. The control, then, of the motor will be entire]vith the thermostat, and the said motor will quickly respond to theaction of the thermostat, but

the said motor, though directly controlled from the thermostat, does notdepend upon the thermostat for anything but merely its initial movement,the remaining movement being a movement of compulsion due to theauxiliary valve mechanism, for the operation of which the main motoritsel't supplies abundant power.

It may be here noted that many of the benefits of my invention will beobtained by employing only one of the auxiliary valves, as, forinstance, in the arrangement and construction shown in Fi 3, the exhaustvalve. This is for the reason. that it is ordinarily not so important toclose the main valve quickly as itis to open it quickly. After aradiator, or other part of the heatinp system to which the controllingvalve loads, is heated up, but little harm attaches to the admitting ora small quantity of steam at a time thereto; it is when the radiator iscold that harm results from thus admitting a small quantity of steam ata ti no, as particularly set forth at the begin ning at thisspecification. ll, then, the auxiliary exhaust valve 36 be employed, sothat upon the first movement of the motor to open the main valve, fluidpressure will be quickly relieved in said motor to cause the rapidcompletion of the movement thereof, the said main valve will becompelled to open quickly, and to so open to its widest extent, and thepartial closing thereof at a later period will not be serious.

In Fig. 5-1 have shown a modified form of valve mechanism, in which theadmission and exhaust valves of the auxiliary valve inechai'iism areoperated by the san'ieleverfa cam of another type being employed inplace of the flange 5i. This cam is arranged to engage a cam follower(33 carried by a levcr (l t, said lever comprising two arms 05, 643,pivoted to a stationary support at (37, said arms pres 3d apart by meansof a spring 68 for a distance limited by a stop (9. The arm (36 of thelever 6i carries a valve TO, which is preferably of soft rubber or someyielding material, said valve ongaging a *alve seat 71, whichcommunicates with a passage TQleading to the motor chamber Motive fluidsupplied to the auxiliary valve mechanism through a channel 73 to avalve chamber i l, said valve chamber containing an inlet valve 75pressed to its seat by means of a spring '(6. A pin 7'? es; tendsbetween the valve 75 and the arm 66 of the lever (S t, said pin being ofsuch a length to just permit the valve 75 to be seated at the same timethe valve is seated, the valve 70 being, however, under but littlecompression at the time. A. spring ('8 exerts tension upon the lever 64to hold the valve 70 to its seat, but movement of the valve away fromits seat is normally opposed by means or the spring 76 and also by thepressure of the motive fluid itself. When the motor operates to closethe main valve, the cam 62 moves downward, and, engaging cam follower63, immediately swings the levcr (it over so as to compress the valve 70and open the valve 75. The spring 68 between the two arms 6-3 and 66 isdesigned to b considerably stronger than the spring 76 so as to properlyinsure the desired movement. Directly this take; place motive 'tluidwill-rash in through the channel. 73 and passage 72 to the motor chamber'26 to en force rapid and complete downward movement of the main valveto a. closing position. When the main valve has completely closed thecam 62 will. have moved to a position beyond the "follower roller (33,to a position immediately beneath same, whereby, upon the carrying thesaid valve, mounted in a portion stationary with respect to the movingparts of the said motor, and a pro ection carried by the moving parts ofthe said motor, arranged, in the movement thereof, to engage the saidvalve carrying member,

Regulating apparatus comprising a main valve, a l'luid pressure motortherefor, the said motor having an auxiliary port or passage andprovided with a valve seat in' a stationaiy part thereof connecting thesaid port or passage, thermostatically controlled means for the saidmotor, a valve titted to the said valve seat, a member carrying the saidvalve, mounted. ina stationary portion of the said lllQLOl', and a.projection carried by a moving portion oi ti 2, saidmotor, adapted inthe movement thereof to engage and operate the said valve carryingmember. l. ltcgulaiing apparatus comprising a main valve, a laidpressure motor therefor, the said motor having an auxiliary port orpassage and provided with a valve seat in a stationary portion thereofconnecting with the Stlitl port or passage, thermostatically controlledmeans tor the said motor, a sec ondary valve titted to the said valveseat, a member carrying the said valve and mount ed in a portionstationary with the motor, a

spring actuated detent carried by the said member, and a PIUJUCUOLIcarried by a moving portion ol' the motor, arranged in the movementthereof, to engage the said detent.

Regulating apparatus comprising main valve, a tluid prersure motortherefor, the said lluid pressure motor provided with an auxiliarydischarge passage, thermostatically controlled means for motive fluidsupplied to the said motor, an auxiliary valve for the tive fluid, afterthe motor has been started to move, the said means being controlled inits operation by movements of the fluid pressure motor itself.

8. Regulating apparatus comprising a main valve, a tluid pressure motortherefor, thermostatieall' controlled means for starting the operationoi the fluid pressure motor in one direction, 'alve controlled means foradmitting an auxiliary independent supply of motive tlnid to the fluidpr'essure motor, the said valve means being operated by the tluidpressure motor itself, in its initial movement, to open the saidauxiliary supply and thereby to enforce the immediate completion oimovement of the said fluid pressure motor alter the saidthermostatically controlled means has started the operation thereof andregardless of the quantity of motive tluid admitted to the l'luidpressure motor by the said thernmstatieally controlled means subsequentto the initial movement of the motor.

9. Regulating apparatus comprising a primary valve, a hold pressuremotor therefor, a seeoudt ry valve controlling an independent port orpassage communi .ating with the said liuid pi airemotor and with a mainsource or supp the said valve also operated by the said p sure motor, atertiary valve and thermostatically controlled means for operating thesaid tertiary valve.

10. Regulating apparatus comprising a main valve, :1 l'luid pressuremotor therefor,

, therniostatically controlled means in direct id atmiliary dischargepassage, a.

pivoted lever carrying the said valve, and a projection carried by amoving portion of the motor, adapted, in its moven'ient, to engage thesaid lever and to operate the said valve.

(3. Regulating apparatus Comprising a main valve, 21 fluid pr ure motortherefor,

the said motor having an auxiliary port. and provided with a stationaryvalve seat connecting with the said 'lassage, thermostaticallycontrolled means for. the said motor, a

arrangedto open and close the said valve by movements in oppositedirections, thermostatically controlled'means for admitting motive fluidto' start the operation of fluid pressure motor in one direction, andmeans tor introducing an auxiliary supply of moconnection \vith'saidlluid pressure motor, and auxiliary inlet and exhaust valves for thesaid llnid pressure motor operated by the said fluid pressure motoritself.

ll. Regulating apparatus comprising a nra n valve, a tluid nessure motortherefor, therniostatically Ctillil'tillCtl means in direct connectionwith tl etlid pressure motor, and an aurdliary inlet valve for the saidfluid pressure motor, also operated by the said tluid pressure motoritself in its movements.

12. .l'tegulating pparatus compris'eing a main valve, a'tluid pressuremotor therefor, thermo tatically controlled means for motive, fluidsupplied to the said motor, an auxiliary inlet passage-from the sourceof supply to said motor, a valve for said passage, and means carried bysaid motor or operating said valve when moving in one direction.

13. Regulating apparatus comprising a main valve, a fluid pressure motortherefor, thermostatieally controlled'means for motive, fluid suppliedto the said motor, an auxiliary passage communicating vvith said motor,a valve for said passage, means carried by a moving portion ol. the saidmotor "for operating said valve when moving in one direction, andyielding means whereby the said valve will not be operated when themotor is .noving in the other direction, said yielding 93.?Siegulath1gapparatus comprising a valve PIUVlClQCl with a stem, {L ther-11'\o:-.l:1l,l(:ul.l controlled. fluid pressure motor s with a nnwu'nle\Yflll including an in 01111 and a lunwing (carried thereby, the salflhousing loosely engaging the said valve item, a spril engaging; the saidnmmhle wall and 001 lzU'illlY exerting pmmu't: i0

move the same, in 0m. (lirvvlimn u collm' upon the valm slum nullmgngcil by the sal l housing whereby flu: rmnwnonls of (he m w 1 able'Wllll, umlvr the inflnoncu of Um said g aring, will be imparted to thesaid spring, a stronger sprlng between the collar upon the valve ste: land the momble Wall exertmg raia are to move the and valve stem 1n theoppmll'c (hrechnn, and sPcondzuy valve mvmw for the mohw lhml, qpi-mtvdby the lnml n'owm'e motor 111 ms 1nu\Qme11L.-.

